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Amethyst
Amethyst

Plumbogummite
Plumbogummite



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Amethyst
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Plumbogummite

Amethyst and Plumbogummite Optical Properties

Optical Properties

Luster

Vitreous
Resinous

Pleochroism

None
None

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Transparent, Transparent to translucent
-

Refractive Index

1.544-1.5531.653-1.688
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
Trigonal

Birefringence

0.009-9999
0 0.296
👆🏻

Clarity

Transparent
-

Amethyst and Plumbogummite Optic Character

Amethyst and Plumbogummite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Amethyst and Plumbogummite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Amethyst and Plumbogummite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Amethyst and Plumbogummite Transparency

Similar to their colors, Amethyst and Plumbogummite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Amethyst is Transparent and Transparent to translucent while Amethyst is Transparent and Transparent to translucent in appearance.